Wondering how much new revenue the proposed Gettysburg casino might generate? Judging by the long faces among gambling industry leaders, I’d say not that much:

As new casinos keep popping up, even with overall gambling revenue stagnating, casino companies are fighting harder for smaller shares of their market.

Executives at the East Coast Gaming Congress, a national casino conference, said Tuesday that with many states now adding table games to the mix, it’s going to be even tougher to succeed in the cutthroat East Coast market.

‘We have to fight this explosion of gambling all around us,’ said Don Marrandino, eastern regional president of Harrah’s Entertainment Inc., which has four casinos in Atlantic City. ‘We have to continually reinvent ourselves as a destination.’

Operators of commercial casinos in New Jersey, New York, Pennsylvania, Delaware, Maryland, Ohio and West Virginia told the gathering in Atlantic City they are being forced to fight for one another’s customers.

‘I don’t think it’s saturated yet, but it’s clearly crowded, clearly more challenging,’ John Finamore, senior vice president of regional operations for Penn National Gaming, said of the East Coast marketAs new casinos keep popping up, even with overall gambling revenue stagnating, casino companies are fighting harder for smaller shares of their market.